-Now that I just restarted Rainlendar I tried to change the date of my laptop to the 15th, and then 14th and then 13th and then 14th again.. and now it works! the tray icon changed every time.. I'll see tonight.. but this is quite weird..

-Before I forgot to mention that Rainlendar1 never failed (in the same laptop and OS).. but tonight I'll run the two versions at the same time and see what happens..

The code is the same but for some reason Windows doesn't change the tray icon if it's done immediately after the computer wakes up from hibernation. In the current implementation Rainlendar waits 15 secs before it updates the icon but I guess it still doesn't work always.

I did some changes to the tray icon handling but since I'm not able to reproduce the problem I cannot tell if it helped. So, try with build 34 once it gets released (probably in couple of weeks) and let me know if it works now.